2630666255220 has 108 divisors (see below), whose sum is σ = 8008229431020. Its totient is φ = 699010744320.

The previous prime is 2630666255219. The next prime is 2630666255251. The reversal of 2630666255220 is 225526660362.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3952385424 + 2626713869796 = 62868^2 + 1620714^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14120436 + ... + 14305524.

Almost surely, 2^{2630666255220} is an apocalyptic number.

2630666255220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2630666255220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4004114715510).

2630666255220 is an abundant number, since it is smaller than the sum of its proper divisors (5377563175800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2630666255220 is a wasteful number, since it uses less digits than its factorization.

2630666255220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185666 (or 185380 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 2630666255220 in words is "two trillion, six hundred thirty billion, six hundred sixty-six million, two hundred fifty-five thousand, two hundred twenty".